256273 has 4 divisors (see below), whose sum is σ = 265140. Its totient is φ = 247408.

The previous prime is 256219. The next prime is 256279. The reversal of 256273 is 372652.

256273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 219024 + 37249 = 468^2 + 193^2 .

It is a cyclic number.

It is not a de Polignac number, because 256273 - 2¹⁷ = 125201 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 5⁷ + 2¹⁷ + 6⁶ + 7² + 3⁵ .

It is a Duffinian number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (256279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4390 + ... + 4447.

It is an arithmetic number, because the mean of its divisors is an integer number (66285).

2²⁵⁶²⁷³ is an apocalyptic number.

It is an amenable number.

256273 is a deficient number, since it is larger than the sum of its proper divisors (8867).

256273 is an equidigital number, since it uses as much as digits as its factorization.

256273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8866.

The product of its digits is 2520, while the sum is 25.

The square root of 256273 is about 506.2341355539. The cubic root of 256273 is about 63.5186049190.

It can be divided in two parts, 256 and 273, that added together give a square (529 = 23²).

The spelling of 256273 in words is "two hundred fifty-six thousand, two hundred seventy-three".